Trying to build mainline on ia64-hpux, I get an error when building libgfortran, which is due to the following ICE:
$ cat tmp28181.f90 integer (kind=1) :: i end $ /tmp/debug/ibin//gcc/f951 tmp28181.f90 <built-in>:0: internal compiler error: Segmentation fault -- Summary: ICE when building libgfortran Product: gcc Version: 4.2.0 Status: UNCONFIRMED Keywords: build Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: fxcoudert at gcc dot gnu dot org GCC build triplet: ia64-hp-hpux11.23 GCC host triplet: ia64-hp-hpux11.23 GCC target triplet: ia64-hp-hpux11.23 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25244